DE10037940A1 - Arrangement for receiving radio signals has display controller driving display to indicate information showing that change has been detected without altering selected programme - Google Patents

Abstract

The arrangement receives radio signals in which a number of programmes are multiplexed onto a carrier frequency and reproduces any programme from the received programmes. It contains a detector (17) of changes in the configuration of the programmes in the signal, a programme selector (15), a programme reproduction device (14), a display (16) of identifying information in the reproduced programme and a display controller (17) driving the display to indicate information showing that a change has occurred without altering the reproduced programme. An Independent claim is also included for a method of informing a user of a reconfiguration of programmes in a received radio signal.

Description

The invention relates to a device for receiving Ra diowaves, for example DAB (Digital Audio Broadcast = Digita audio broadcasting).

FM broadcasting is well known as a radio broadcast with high sound quality. However, the number of FM broadcasting stations is always further increased, so the sound quality through interference is reduced. It is also the case of FM radio with mobile Units difficult to receive broadcast signals in good condition to catch.

Consequently, DAB is used as a radio broadcasting system to solve the problem Problems suggested. The development of DAB is in the European Research Coordination Unit ("European Re search Coordinating Agency ", EUREKA). Furthermore DAB is already through the European Telecommunications Standard standardized.

The structure of the transmission system and the reception system are in DAB compared to conventional FM broadcasting comparatively complicated. However, DAB has many advantages in its capabilities For example, DAB is capable of high sound quality on compact Disk (CD) level in a mobile unit ensure one Number of programs to deliver in a variety of languages to send information about the weather and the streets able to receive and the like.

At DAB, every broadcast channel currently uses a reserved channel Frequency between receiver frequencies that the individual channels len are assigned to the television broadcast. There is a lot Number of frequencies that correspond to a total of 64 channels. A group of carrier frequencies corresponding to each channel is called an "ensemble". There is a lot in every ensemble number of broadcast programs (or services) multiplexed.  

At DAB, the number and content of services are in the individual ensembles not specified. Therefore, the regular or changing the number of or the content of services that a particular ensemble form, a process called reconfiguration carried out.

The reconfiguration is carried out, for example, in the case if after a nationwide news program is dropped off (i.e. ended) in certain regions or districts the number of services for news programs is increased, or in the case when you were at two different places games or tournaments in a sport have been sent.

However, there is a lack of a conventional receiver a corresponding facility no possibility of a Be to inform users of the reconfiguration so that it does not it is possible for users to be created after reconfiguration Listen to news services at a convenient time, except they choose the new services at random, or they choose according to the stopping (stopping) of a service they are up to listened to any service again.

On the other hand, a technique for forcibly changing one or more selected services in the new services if the reconfiguration is performed. However Technology does not unconditionally reflect the intentions of users limits again. Namely, the selected service becomes one changed new service that a respective user in some Don't need to listen to cases or don't want to listen. Therefore each user must add the new service to the previous one Change service. This leads to real inconvenience for you every user. Next is the number of nights created judicial services are not always one. Therefore, when one of the intelligence services is forcibly selected that other not perceived by the user. Probably The fact that the user does not listen to the other services is high.

An object of the invention is therefore to develop a device for emp catch to create broadcast signals by means of which it is possible is to adequately reconfigure a user inform, even if the display options are limited are.

The above object of the invention is achieved by a device device for receiving radio signals in which each of at least one carrier frequency / s a variety of programs are multiplexed, and to play any pro from a variety of programs received. The before direction for receiving a radio signal and for again The program is equipped with: a detection device direction for detecting a change in a program configuration ration in a received broadcast signal; a selection direction to select any program from the emp catch programs; a playback device for playback the program selected by the selector; one Display device for displaying a reproduced pro information identifying grams, and a display control tion device for controlling the display device so that Information that indicates that there is a change is displayed by the display device, whereby, if by the detection device detects a change that reproduced program is not changed.

According to the device for receiving radio signals and selects a selection to play any program device any program from received programs out. Then a playback device gives that from the selection device selected program again. Another shows Display device which characterizes a reproduced program information. However, the program configuration be changed. Therefore, a detection device detects a change in the configuration of the programs in the receive NEN broadcast signal. Then, if of the detection device device a change is detected by a display control tion device controlled a display device so that  Information that indicates that there is a change is displayed by the display device. As a result, it will Program played as it is, and the display device tion displays the information that indicates that the changes tion is present.

Therefore, a user can clearly recognize that the program con figuration is changed, and at an appropriate time each hear any new program in the new configuration if he wishes to listen to the new program. He can continue if he doesn’t want to listen to the latter, listen to that listen to the current program as it is.

In one embodiment of the device for receiving a Broadcast signal and to play any program shows if a change is detected by the detection device the display control device sequentially In formation that each program in the new program configuration ration indicates.

According to this embodiment, if the detection is done before direction a change is detected by the display control tion device sequentially displayed information each Program in the new program configuration. Therefore a user can clearly see that the program configuration is changed, and he can also recognize the content of the change nen. Consequently, he can be each at an appropriate time listen to any new program in the new configuration if he wishes to listen to the new program.

In another embodiment of the receiving device a broadcast signal and to play any pro shows if a change from the detection device is detected, the display control device a Aufli information that each program in the new pro gram configuration indicates.

According to this embodiment, if the detection is done before  direction a change is detected by the display device a list of information that each pro in the new program configuration. Therefore a user can clearly see that the program configuration is changed, and he can also recognize the content of the change nen. Consequently, he can be each at an appropriate time listen to any new program in the new configuration if he wishes to listen to the new program.

In a further embodiment of the device for receiving a broadcast signal and for playing any Program shows if a change from the detection device tion is detected, the display control device Infor mation, which is a newly added program in the new Pro gram configuration features in a distinctive way.

According to this embodiment, if the detection is done before direction a change is detected, information that a newly added program in the new program configuration features, in a distinctive manner shows. Therefore, a user can clearly see that the Pro gram configuration is changed, and it can also change the content recognize the change. Consequently, he can at the appropriate time listen to any new program in the new configuration if he wishes to listen to the new program.

The above object of the invention is achieved by a method to notify a user of a reconfiguration of Programs in a received broadcast signal, which Ver drive with a device for receiving a radio nals, in which a variety of programs is multiplexed, and to play any pro gramms from a variety of programs received becomes. The method has: a detection step in which a change in the configuration of any program from the received programs is detected, and a display Control step for controlling the display device so that  Information that indicates that there is a change is displayed by the display device, whereby, if by the detection device detects a change that reproduced program is not changed.

According to the method of informing a user of a Program reconfiguration is a in a detection step Change the program configuration in the received broadcast signal detected. Then, if a change is detected the display device in a display control step controlled so that information indicating that a change is present, is indicated by the display device, the program being played is not changed.

Therefore, a user can clearly recognize that the program con figuration is changed, and at an appropriate time each hear any new program in the new configuration if he wishes to listen to the new program. He can continue if he doesn’t want to listen to the latter, listen to that listen to the current program as it is.

The above object of the invention is achieved by a method to inform a user of a reconfiguration of Programs in a received broadcast signal, which Ver drive with a device for receiving a radio nals, in which a variety of programs is multiplexed, and to play any pro gramms from a variety of programs received becomes. The method has: a detection step in which a change in the program configuration in the received Pro is detected, and a display control step, in which the display device is controlled so that Informa tion that each program knows in the new configuration is displayed by the display device, wherein, if a change is detected by the detection device the program being played is not changed.

According to the method of informing a user of a  Program reconfiguration is a in a detection step Change the program configuration for the received programs men detected. Then, if a change is detected, in a display control step controlled that information that every new program in the new program configuration is indicated by the display direction is displayed, with the program being played is not changed.

Therefore, a user can clearly recognize that the program con figuration is changed, and at an appropriate time each hear any new program in the new configuration if he wishes to listen to the new program. He can continue if he doesn’t want to listen to the latter, listen to that listen to the current program as it is.

The drawing shows:

Fig. 1 is a block diagram showing in outline the structure of a digital audio broadcasting (DAB) receiver as an embodiment of the invention;

Fig. 2 is a flowchart showing the process of detecting program reconfiguration and informing a user of the reconfiguration;

3A is a view for explaining the manner of displaying on a display device before a reconfiguration is generated.

3B is a view for explaining the manner of displaying on a display device after a reconfiguration has been generated.

Fig. 4 is a view showing the structure of a DAB single packet (frame) data receiver in the receiver shown in Fig. 1;

Fig. 5 is a view showing the structure of an ensemble received in the receiver shown in Fig. 1;

Fig. 6 is a view showing in detail the structure of the FIC contained in the DAB single packet data shown in Fig. 4;

Fig. 7 is a view showing in detail the structure of the "0" type FIG included in the FIC shown in Fig. 6;

Fig. 8 is a view for detailed demonstration of the structure of a data field FIG (0/2) of the type "0" for expan sion 2 of the figure shown in Fig. 7.

The following is an embodiment of the invention Explained reference to the drawing.

In the embodiment, the invention is to a receiver adapted to receive DAB.

As shown in FIG. 1, the receiver has an RF device 11 , a demodulation device 12 , a channel decoration 13 , an audio decoder 14 , an operating device 15 , a display 16 and a CPU 17 .

The RF device 11 has an antenna and a PLL circuit (PLL = Phase Locked Loop) for generating a local signal. The RF device 11 tunes a falling radio wave onto the antenna to a radio wave of a certain frequency, which is called an ensemble, the radio wave of the DAB being received, and a signal of the radio wave being output.

The demodulation device 12 has an analog-to-digital converter, an FFT circuit (FFT = "Fast Fourier Transform" = fast Fourier transform), an IQ demodulation circuit (IQ "Inphase Quadrature" = phase correct quadrature) and the like. The demodulation device 12 demodulates a DAB signal using DQPSK ("Differenti al Quadrature Phase Shift Keying" = Phase Umtastung, ie Ver encryption by phase shift, with differential quadrature) and outputs DAB single packet data 20 , as in Fig. 4th is shown.

As shown in Fig. 4, the DAB single packet data 20 in the present illustration in the order from left to right: synchronization channel 21 , FIC ("Fast Information Channel" = Schnellinformationskanal) 22 and MSC ("Main Service Channel "= main service channel) 23 . The FIC 22 also consists of a multiplicity of FIBs (Fast Information Block = Fast Information Block) 24 . The MSC 23 also consists of a large number of CIFs ("Common Interleaved Frames" = common distorted individual packets) 25 . DAB has three specification modes, Mode 1 to Mode 3 . In each mode, DAB single packet data 20 have a different length of time and a different number of FIBs 24 and CIFs 25 . For example, in mode 1 , the time length of a DAB single packet date is 96 ms and the number of FIBs 24 in a DAB single packet date is 12 and the number of CIFs 25 in a DAB single packet date is four .

The channel decoder 13 has a deinterleaving circuit, an error correction circuit and the like. The channel decoder 13 decodes the above-mentioned DAB single packet data 20 output from the demodulation device 12 by using a prescribed method. The channel decoder 13 further outputs the FIC 22 to the CPU 17 and extracts the part to be reproduced from the MSC 24 and outputs it to the audio decoder 14 .

In other words, the channel decoder 13 separates the FIC 22 and the MSC 24 from DAB single packet data 20 , the FIC 22 being Viterbi-decoded, decrypted, and a CRC ("Cyclic Redundancy Check" = carried out) is sent to the CPU 17 .

The channel decoder 13 , further in order from the CPU 17 , extracts a subchannel (source data) for one by the CPU 17 from the CIF 25 contained in the MSC 23 in the DAB single packet data 20 . Requested service is necessary, and performs time-equalizing Viterbi decoding of the FIC 22 , decryption, playback of a single audio packet (audio frame) and output to the audio decoder 14 .

The audio decoder 14 has, for example, an ISO / MPEG audio source decoder or an SAA2502 manufactured by Phillips. The audio decoder 14 divides the audio individual packet into a header part (header part) and an audio part. The audio decoder 14 then supplies the header part to the CPU 17 and divides the data of the audio part into data for a left channel and data for a right channel. Furthermore, the audio decoder 15 carries out inverse quantization and scaling for the data of each subband. In addition, the audio decoder combines 14 frequencies of audio signals from subbands and carries out an analog-digital conversion of the audio signals and outputs them e.g. B. from a loudspeaker device and the like.

The controller 15 outputs a wide variety of instructions to the CPU 17 , for example the instruction for switching receiving stations, receiving frequencies and audio selections between a main audio and a sub audio.

The display 16 shows the operating state, reception state and the names of selected services and the like.

The CPU 17 controls the entire operation of the receiver. For example, the CPU 17 outputs the data for setting the PLL used for setting local signals of a PLL circuit for tuning according to the instructions from the controller 15 to the RF device 11 . Further, the CPU 17 outputs to the demodulation device 12 a reset signal for resetting the device 12 after the output of the data for setting the PLL. In addition, the CPU 17 outputs the data for designating the various data formats (transmission mode data) to the channel decoder 13 . The CPU 17 receives the FIC 22 from the channel decoder 13 and distinguishes the entire data structure.

Further, the CPU 17 outputs the data for commanding extraction of source data to be reproduced to the channel decoder 13 in accordance with the instructions from the controller 15 . According to the controller 15, the CPU 17 outputs the data for commanding switching of the audio selections between the main audio and the sub audio. The CPU 17 receives the header part of the individual audio packet from the audio encoder 15 and, on the basis of status data contained in the header part, distinguishes whether sound multiplex transmission is being sent.

Next, the general reception operation of the receiver will be explained. The CPU 17 outputs the data for setting the PLL for tuning to the frequency of the selected DAB signal to the RF device according to the instructions from the controller 15, and resets the demodulation device. The CPU 17 , according to the selected transmitter, knows the service to be extracted to the audio decoder 13 . The RF device 11 performs tuning on radio waves received from the antenna to the ensemble which is the same as the signal corresponding to the data sent from the CPU 17 to set the PLL. Further, the RF device 11 extracts the tuned signal and supplies it to the demodulation device 12 . The demodulation device 12 separates the DAB radio wave from the tuned signal and demodulates it as a single packet data using a digital scheme. The channel decoder 13 converts the demodulated digital signal into DAB single packet data and supplies the necessary data to the CPU 17 . Furthermore, the channel decoder 13 extracts an audio single packet to be reproduced in accordance with the instruction sent from the CPU 17 and outputs it to the audio decoder 14 . The audio decoder 14 extracts the header part from the supplied audio individual packet and delivers it to the CPU 17 . Furthermore, the audio decoder 14 reads the audio part of the audio individual package and demodulates it into analog audio signals and reproduces them by means of a loudspeaker device. At the same time, the name of the service is shown on the display 15 .

Next, the structure of the service in the overall structure of the data extracted from the CPU 17 with respect to the FIC 22 will be explained.

Fig. 5 shows a block diagram showing an example of the structure of a service. An ensemble 30 with the ensemble label DAB 1 has a multiplicity of services 31 with service labels, such as, for example, DAB Radio I, DAB Radio II, DAB Radio III etc.

The service 31 with the DAB Radio I label has a main service component 32 and two sub-service components which consist of the first sub-service component 32 'and the second sub-service component 32 '. The main service component 32 has the DAB Radio I label. The first sub-service component 32 'is a traffic message channel (TMC). The second sub-service component 32 'is service information (SI). The service component 32 with the label DAB Radio I and the service component 32 ', which contains SI, are transmitted in different channels, which are the sub-channel 33 with the number "a" and the sub-channel 33 with the number 63. The service component 32 ', which TMC contains, is transmitted in the Fast Information Data Channel (FIDC) 26 of the FIC 22 .

The service 31 with the label DAB Radio II has two service components. These are a service component 32 with a DAB Radio 2 label and a service component 32 with a DAB Radio 3 label. Both are carried by a subchannel of the MSC 23 . The service component with the label DAB Radio 2 is transmitted by subchannel 33 with channel number "b". The service component 32 with the label DAB Radio 3 is transmitted from the subchannel 33 with the channel number "d".

The service 31 with the label DAB Radio III has two service components. These are a service component 32 with the label DAB Radio 4 and a service component 32 with the label DAB Radio 5 . The service component 32 with the label DAB Radio 4 can be switched by means of a switch to the service component 32 with the label DAB Radio 1 . The service component 32 with the label DAB Radio 4 is transmitted by the subchannel 33 with the channel number "c". The service component 32 with the label DAB Radio 5 is transmitted by the subchannel 33 with the channel number "e".

An analysis of the content of the FIB 24 having the FIC 22 enables the above-mentioned structure of the services to be distinguished. More precisely, an analysis of the content of the FIG ("Fast Information Group"), which the FIB 24 has, enables this distinction.

Fig. 6 is a view for showing the structure of FIB 24th The FIB 24 contains, in the illustration in FIG. 6 in the order from left to right, an FIB data field 50 with a length of 30 bytes and a CRC ("Cyclic Redundancy Check" = cyclical redundancy check) 51 with a length of 16 Bit. The FIB data field 50 contains, in the illustration shown in FIG. 6 from left to right, a useful data field 52 , an end marker 53 , which marks the end of the useful data, and a filling element (padding) 54 .

The user data field 52 contains a multiplicity of FIGs ("Fast Information Group" = Schnellinformationsgruppe) 55 . Each FIG. 55 contains, in the illustration shown in FIG. 6 in order from left to right, a FIG header 56 and a FIG data field 57 .

The FIG header 56 contains, in the representation shown in FIG. 6 in the order from left to right, a FIG type 58 which identifies the type of the data contained in the FIG data field 57 with a length of 3 bits , and a length 59 which indicates the byte length of the FIG data field 57 with a length of 5 bits.

Fig. 7 is a view for showing the structure of a FIG type with an FIG-of "0". The content of the 1-byte part at the front end of FIG data field 57 varies from one FIG type to another. As shown in FIG. 7, the part at the front end includes an extension 63 . In the event that the FIG type is "0", the one-byte long part at the front end of the FIG data field 57 , in the illustration in FIG. 7, in the order from the left, corresponding to the front end, to the right, corresponding to the lower end, a C / N flag (C / N = "Current / Next" = actual / next) 60 , an OE flag (OE = "Other Ensemble" = other ensemble) 61 , a P / D- Flag (P / D = "Program / Data" = program / data) 62 and an extension 63 .

Following the 1-byte field, field 64 of type "0" is provided as a data field. The detailed content provided in the data field is defined by the FIG type and the extension 63 . In the following, a data field corresponding to a type 0 field for an extension "n" is referred to as FIG (0 / n). The data field designated as FIG (0 / n) contains the data required to control reception according to various criteria. For example, FIG (1/0) and FIG (1/1) contain text data corresponding to the names of ensembles and services, which are shown on the display 16 during program reception.

Fig. 8 is a view for showing the structure of FIG (0/2). FIG (0/2) 70 contains a service field 71 which identifies basic information of each service contained in an ensemble. Therefore, an analysis of the content of the service field 71 makes it possible to distinguish the structure of each service in an ensemble 30 with an ensemble label DAB 1 , as shown in FIG. 5.

Each service field 71 contains a service identification symbol or Service ID (SId) 72 for short, the number of service components 75 contained in the service being identified by the service ID 72 and the service component description 76 detailed information displays about each service component. The service component description 76 further includes a TMId 77 and a detailed information field 78 .

TMId 77 is a date from a series of data indicative of identification, mainly comprising MSC 23 . If the value of the TMId 77 is "00", the data form an audio! R! CASS2; if the value of TMId 77 is "01", the data is a data stream. If the value of the TMId 77 is "10", the data is transmitted as FIDC ("Fast Information Data Channel") 26 in the FIC 22 , like the TMC service component 26 shown in FIG. 5. If the value of the TMId 77 is "11", the data is packet data.

The detail information field 78 contains detailed information about each type of data. For example, in the case of an audio data stream, the detail information field 78 includes a subchannel id ("Sub Channel Id") 79 and the like. Reference to subchannel ID 79 enables the CPU to determine which subchannel is assigned to which service component.

Furthermore, reference to the content of the number of components 75 enables the CPU to determine an increase and decrease in the number of service components.

Namely, always referring to the content of the number of components 75 makes it possible to detect that creating a reconfiguration increases the number of service components, as shown in FIG. 5.

In the embodiment, if creating a recon figuration is detected, the user of this thereby inform that a label of services available in an ensemble appears again. In the following the procedure of the Detek reconfiguration and informing a user explained in detail about how to create the reconfiguration.

A flow chart of the method of detecting a reconfiguration and informing Fig. 2 shows a user of the generation of a reconfiguration. The method is carried out by the CPU 17 shown in FIG. 1 as part of a control program of a DAB tuner (DAB tuner) which is stored on a storage medium such as a CD-ROM, a hard disk, a ROM or not described here the same is stored. The method is carried out at specified intervals, for example by an interrupt process. As a process running simultaneously with the method, a method is carried out in which DAB is received and audio data are reproduced.

First, in the DAB single packet data 20 output from the demodulation device 12 , the CPU 17 reads the FIB 24 having the FIC 22 . Furthermore, by reading FIG. 55 contained in the user data field 52 in the FIB 24 , the CPU 17 determines whether the FIG (0/2) 70 is detected as a data field that corresponds to a FIG of type "0" for the extension 2 (step S1).

In the event that FIG (0/2) 70 is not detected (step S1; No), the process of detecting a reconfiguration is ended, and the process is carried out again after a specified period of time.

On the other hand, in the case where FIG (0/2) 70 is detected (step S1; yes), the CPU 17 determines whether thereby that the content of the number of components 75 shown in FIG (0/2) 70 and the content of the TMId 77 contained in the service component description 76 is read, the number of service components in the audio data stream is changed with the value "00" of the TMId 77 (step S2).

As a result of the determination, if FIG (0/2) 70 is not detected (step S1; no), the process ends (step S2; no) and the process of detecting FIG (0/2) 70 becomes after performed again for a specified period of time.

On the other hand, if there is a change in the number of service components th is detected in the audio data stream (step S2; yes), the labels of the service components in an ensemble displayed again while the state of a Pro is maintained as it is (step S3).

In FIG (1/1), as mentioned above, the service component Label contain corresponding text data so that it is possible to obtain necessary text data by reading the FIG (1/1).  

For example, as shown by dashed lines in FIG. 5, assume that a service 31 with a DAB Radio IV label is added, and that this service has a service component 32 with a DAB Radio 6 label, and that a Reconfiguration is performed so that the SubCh "f" is assigned to a service component 32 with a label DAB Radio 6 , then the method is carried out as follows: first, the number of service components from five (DAB radio 1-5 ) to six (DAB Radio 1-6 ) is increased so that a change in the number of service components in the stream audio data is detected (step S2; yes). Then, the labels of the service components in an ensemble are displayed again while the state of the playback of a program is kept as it is (step S3). That is, the CPU 17 reads the text data corresponding to the label DAB Radio 6 and contained in the service component 32 and displays it on the display 16 .

The display 16 according to the embodiment as shown in Fig. 3A can only display one line with twelve characters, so that only one service component is displayed at a time. Therefore, in the embodiment as shown in Fig. 3A, if "DAB Radio 1 " is displayed before a reconfiguration is recognized, all service components are repeatedly displayed after a reconfiguration has been created, such as in the following order, "DAB Radio 1 ", "DAB Radio 2 ", "DAB Radio 3 ", "DAB Radio 4 ", "DAB Radio 5 ", "DAB Radio 6 " and "DAB Radio 1 ".

As mentioned above, only the state of the ad will match a reconfiguration without changing the state of the how dergabe itself is changed so that a user can recognize can that a reconfiguration has been created, and also, which service component has been added. Therefore, the User, if he wishes, the newly added service listen to the component, select it immediately and listen to it. In addition, if he does not wish, the newly added one Listen to service component when reconfiguration creates , he continues to listen to the current program, such as  it is, and after that, if he feels like it, he can listen to newly added program.

As mentioned above, in case the ad is over a minor display capabilities, service components scrolled the, or it is possible that only the newly added service component flashing so that the user can see NEN that the new service component has been added. If the ad has a high display capacity, is it is also possible that a list of labels of all Service components that are received after a recon figuration has been created is displayed again.

In the above embodiment, one is exemplified Reconfiguration added a new program. However, that is Invention not limited to this type of reconfiguration it is equally applicable in the case when as an example a program is deleted after a reconfiguration. Is further the invention applicable in the case when as an example a reconfiguration the content of programs is changed, without changing the number of programs. Furthermore it is applicable in the case when as an example one Reconfiguration the number of service components is changed without changing the number of services. Furthermore it is applicable in the case when as an example one Reconfiguration the number of services is changed without the number of service components is changed. It is further applicable in the case when as an example of a reconfigura tion the number of subchannels or the assignment of the service Components to the subchannels is changed without the An number of services or the service components are changed.

The user can create a reconfiguration Use of a sound generator, such as a buzzer or the like can be communicated without the Status of the ad is changed.

Claims (6)

1. Device for receiving a radio signal, in which a multiplicity of programs is multiplexed into a carrier frequency, and for reproducing any program from a multiplicity of received programs, characterized in that the device is equipped with:
a detection device ( 17 ) for detecting a change in a configuration of the programs in a received broadcast signal;
a selector ( 15 ) for selecting any program from the received programs;
a playback device ( 14 ) for playing back the program selected by the selection device ( 15 );
a display device ( 16 ) for displaying information indicative of a given program, and
a display control device ( 17 ) for controlling the display device ( 16 ) so that information indicating that there is a change is displayed by the display device ( 16 ), and if a change is detected by the detection device ( 17 ), the program being played is not changed. 2. Device according to claim 1, wherein, if (17) a change is detected by the Detek tion device which ge Ad-control device (17) indicates sequential information makes each program identified in the new program configuration. , The Ad ge-control device (17) indicating 3. The apparatus of claim 1, wherein, if (17) a change is detected by the Detek tion device a collection of information that makes each program identified in the new program configuration. Indicates 4. The apparatus of claim 1, wherein if tion device of the Detek (17), the change is detected, the Ad ge-control device (17) information, the characteristic net a newly hinzuge interposed program in the new program configuration in a distinctive manner . 5. A method for informing a user of a reconfiguration of programs in a received broadcast signal, which method with a device for receiving a broadcast signal in which a plurality of programs are multiplexed into a carrier frequency, and for playing back any program from a plurality of received programs is used, characterized in that the method comprises:
a detection step in which a change in the configuration of the programs in the received programs is detected, and
a display control step in which the display device is controlled so that information indicating that there is a change is displayed by the display device, and if a change is detected by the detection device, the reproduced program is not changed. 6. A method of informing a user of a reconfiguration of programs in a received broadcast signal, which method comprises an apparatus for receiving a broadcast signal in which a plurality of programs are multiplexed into a carrier frequency, and for playing back any program from a plurality of received programs is used, characterized in that the method comprises:
a detection step in which a change in the configuration of the programs in the received programs is detected, and
a display control step in which the display device is controlled so that information indicating each program in the new configuration is displayed by the display device, and if a change is detected by the detection device, the reproduced program is not will be changed.